Roll DirectX Shader Compiler from 397ffb2264b4 to f780ce917e6a (1 revision)

https://chromium.googlesource.com/external/github.com/microsoft/DirectXShaderCompiler.git/+log/397ffb2264b4..f780ce917e6a

2026-09-17 jackell@microsoft.com [HLSL] Test both B layouts in Wave MMA (#8912)

If this roll has caused a breakage, revert this CL and set the roller
to dry run mode using the controls here:
https://autoroll.skia.org/r/directx-shader-compiler-dawn
Please CC jrprice@google.com,webgpu-developers@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in DirectX Shader Compiler: https://github.com/microsoft/DirectXShaderCompiler/issues/new/choose
To file a bug in Dawn: https://bugs.chromium.org/p/dawn/issues/entry

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

Bug: None
Tbr: jrprice@google.com
Change-Id: I081e7fd727bc4586cd935a12280178b15efff9b5
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/343095
Commit-Queue: dawn-autoroll@skia-public.iam.gserviceaccount.com <dawn-autoroll@skia-public.iam.gserviceaccount.com>
Bot-Commit: dawn-autoroll@skia-public.iam.gserviceaccount.com <dawn-autoroll@skia-public.iam.gserviceaccount.com>
diff --git a/DEPS b/DEPS
index 98cefaa..0357b60 100644
--- a/DEPS
+++ b/DEPS
@@ -433,7 +433,7 @@
   },
 
   'third_party/directx-shader-compiler/src': {
-    'url': '{chromium_git}/external/github.com/microsoft/DirectXShaderCompiler@397ffb2264b4650c97b2418ec9a0f07228719317',
+    'url': '{chromium_git}/external/github.com/microsoft/DirectXShaderCompiler@f780ce917e6a98553d5bb3eb595439c4aa4372f4',
   },
 
   'third_party/directx-headers/src': {
diff --git a/third_party/directx-shader-compiler/README.chromium b/third_party/directx-shader-compiler/README.chromium
index da86c61..ef5f6c1 100644
--- a/third_party/directx-shader-compiler/README.chromium
+++ b/third_party/directx-shader-compiler/README.chromium
@@ -4,7 +4,7 @@
 Update Mechanism: Autoroll
 Security Critical: yes
 Version: N/A
-Revision: 397ffb2264b4650c97b2418ec9a0f07228719317
+Revision: f780ce917e6a98553d5bb3eb595439c4aa4372f4
 License: bcrypt-solar-designer, bsd-3-clause, gpl-2.0-with-autoconf-exception, isc, mit, ncsa, spencer-86, unicode_org, unlicense
 License File: LICENSE
 Shipped: yes
diff --git a/third_party/directx-shader-compiler/src b/third_party/directx-shader-compiler/src
index 397ffb2..f780ce9 160000
--- a/third_party/directx-shader-compiler/src
+++ b/third_party/directx-shader-compiler/src
@@ -1 +1 @@
-Subproject commit 397ffb2264b4650c97b2418ec9a0f07228719317
+Subproject commit f780ce917e6a98553d5bb3eb595439c4aa4372f4